JP5281655B2 - Blood bag system and blood processing method - Google Patents

Abstract

The blood bag system (30) includes: a blood treating filter (8) for treating a blood; a first bag (1) for containing therein a blood to be supplied to the blood treating filter (8); a second bag (2) for containing therein the blood treated by the blood treating filter (8); storage solution supply means (7) for supplying a blood component storage solution to the blood treating filter (8); a third bag (3) into which a blood remaining in the blood treating filter (8) replaced by the blood component storage solution is transferred and in which the recovered blood is temporarily contained; and a fourth bag (4) to which a blood component separated from the treated blood contained in the second bag (2) is transferred and in which the thus transferred blood component is contained.

Description

  The present invention relates to blood component preparations used for blood transfusion, such as red blood cell concentrate (CRC: Concentrated Red blood Cell, hereinafter referred to as CRC), concentrated platelet plasma (PC: Platelet Concentrated, hereinafter referred to as PC), platelet poor The present invention relates to a blood bag system and a blood treatment method for preparing plasma (PPP: Platelet Poor Plasma, hereinafter referred to as PPP), platelet-rich plasma (PRP: Platelet Rich Plasma, hereinafter referred to as PRP), and the like.

  Conventionally, blood component preparations are prepared by removing white blood cells from blood collected from a donor and centrifuging the blood from which the white blood cells have been removed. For example, in Patent Document 1, blood is flowed through a leukocyte removal filter using a means for feeding blood from a blood inlet, and after the leukocytes are captured by the leukocyte removal filter, the blood remaining in the leukocyte removal filter is removed. A recovery method and a recovery device for recovering with a recovery solution that is a physiological solution are described.

JP-A-2004-166748 (Claims 1 and 16)

  However, in the collection method and collection apparatus described in Patent Document 1, both the blood from which leukocytes have been removed and the collection liquid from which the blood remaining in the leukocyte removal filter has been stored in a collection bag, Blood component preparations (CRC, PC and PPP) are prepared by centrifugation. Therefore, the prepared PPP contains a recovery solution (physiological solution), and there is a problem that the PPP concentration decreases. In addition, in the prepared CRC and PC, a physiological component solution has a low effect of preventing a decrease in the function of red blood cells or platelets, so a blood component storage solution (erythrocyte storage solution or platelet storage solution) must be newly added. There is also a problem.

  Therefore, the present invention was devised to solve such problems, the purpose of which is that there is no decrease in the concentration of the blood component preparation to be prepared, and no new addition of a blood component storage solution is required, and Another object of the present invention is to provide a blood bag system and a blood processing method capable of improving the recovery rate of blood component preparations.

In order to solve the above problems, a blood bag system according to the present invention is processed by a blood processing filter for processing blood, a first bag for storing blood to be supplied to the blood processing filter, and the blood processing filter. A second bag for storing processed blood, a storage solution supply means for supplying a blood component storage solution to the blood processing filter, and recovering blood remaining in the blood processing filter replaced by the blood component storage solution; A third bag for temporarily storing the collected blood, a fourth bag for transferring the blood component separated from the treated blood stored in the second bag, and storing the transferred blood component; A blood component separated from the collected blood stored in the bag is transferred, a fifth bag for temporarily storing the transferred blood component, and the fourth bag Furthermore the separated blood components from the transfer blood components are transported, and having a sixth bag for accommodating transfer blood components, a.

  In the blood bag system, the blood processing filter is a leukocyte removal filter that removes leukocytes from whole blood, the first bag is a blood collection bag that contains whole blood, and the second bag is a red blood cell storage unit. The blood component storage solution is a platelet storage solution, the fourth bag is a platelet storage bag, and the sixth bag is a plasma storage bag. Further, the blood bag system is characterized in that the sixth bag stores a red blood cell preservation solution before storing the blood component. The blood bag system is a bag in which the third bag and the fifth bag are integrated through a partition wall. Further, in the blood bag system, the storage liquid supply means is connected in advance to a bag-like container containing the blood component storage liquid, or the bag-like container is connected aseptically when used. It is characterized by being.

  According to the above-described configuration, by having the storage liquid supply means for supplying the blood component storage liquid to the blood processing filter, the blood remaining in the blood processing filter can be recovered with the blood component storage liquid, and the blood together with the processed blood Since it is used for preparation of component preparations, the amount of blood used for preparation of blood component preparations (specifically, CRC, PPP and PC) increases.

  In addition, since the third bag for storing the collected blood contains the blood component storage solution supplied from the storage solution supply means to the processed blood in the second bag used for the preparation of the blood product, The concentration of blood components (specifically, PRP) separated in the second bag is not lowered by the blood component storage solution. As a result, the concentration of the blood component preparation (specifically, PPP) prepared from PRP in the fourth bag is not lowered by the blood component storage solution.

  In addition, since the blood component preserving liquid is previously included as a component of the blood bag system (preserving liquid supply means and the sixth bag), the function of the blood component preparation (specifically, CRC and PC) is prevented from being deteriorated. It becomes possible to use for.

  Furthermore, since it has the 5th bag which accommodates the blood component isolate | separated from the collected blood, in order to prevent the functional deterioration of the blood component preparation (specifically PC), the blood component preservation solution contained in the collected blood It is possible to use the blood component preparation (specifically, PPP) partly for reducing the function of other blood component preparation (specifically, PC) as in the past. .

The blood processing method according to the present invention includes a blood processing filter for processing blood, a first bag for storing blood to be supplied to the blood processing filter, and a second bag for storing processed blood processed by the blood processing filter. And a storage solution supply means for supplying a blood component storage solution to the blood processing filter; and blood remaining in the blood processing filter replaced by the blood component storage solution is recovered, and the recovered blood is temporarily stored Blood is processed using a blood bag system having a third bag and a fourth bag in which a blood component separated from the processed blood stored in the second bag is transferred and the transferred blood component is stored. A blood processing method for supplying blood stored in the first bag to the blood processing filter and treating the blood with the blood processing filter. Storing the treated blood in the second bag, and then supplying a blood component preservation solution from the preservation solution supply means to the blood treatment filter to collect blood remaining in the blood treatment filter; A first step of storing the collected blood in the third bag; a second step of centrifuging the second bag to separate the processed blood stored in the second bag into two blood components; and the second bag One blood component is left inside, the other blood component is transferred to the fourth bag, and then the collected blood stored in the third bag is transferred to the second bag. And a third step of mixing with.

  According to the above procedure, the blood remaining in the blood processing filter includes the first step of supplying the blood component storage liquid from the storage liquid supply means to the blood processing filter and storing it in the third bag as the collected blood. Can be recovered with a blood component storage solution and used together with the treated blood for the preparation of blood component preparations, the amount of blood used for the preparation of blood component preparations (specifically CRC and PPP) increases. Then, since the blood component storage solution (collected blood) is not mixed with the processed blood in the second bag used for the preparation of the blood component preparation, it is separated in the second step and transferred to the fourth bag in the third step. The concentration of the blood component preparation (specifically, PPP) is not lowered by the blood component storage solution.

  In addition, a third step is included in which the collected blood (specifically, blood component storage solution and CRC) in the third bag is mixed with the blood component (specifically, CRC) in the second bag separated in the second step. Thus, the blood component storage solution can be used to prevent the functional deterioration of the blood component preparation (specifically, CRC).

Blood processing method according to the present invention, there is provided a blood processing method for processing blood using a blood bag system according to claim 1, wherein the blood treating filter the blood accommodated in the first bag The processed blood processed by the blood processing filter is stored in the second bag, and then a blood component storage solution is supplied from the storage solution supply means to the blood processing filter. A first step of collecting blood remaining in the third bag and storing the collected blood in the third bag; centrifuging the second bag and the third bag; and processing blood stored in the second bag; A second step of separating the collected blood stored in the third bag into two blood components, respectively, leaving one blood component in the second bag, 4, while transferring one blood component in the third bag, transferring the other blood component to the fifth bag, and then transferring one blood component in the third bag to the second bag. A third step of transferring to the bag and mixing with one of the blood components in the second bag; and centrifuging the fourth bag to convert the other blood component contained in the fourth bag into two more blood components A fourth step of separating the blood component into the fourth bag, leaving one blood component in the fourth bag, transferring the other blood component to the sixth bag, and then transferring the other blood component in the fifth bag to the fourth bag. And a fifth step of transferring to the bag and mixing with one blood component in the fourth bag.

  According to the above procedure, the blood remaining in the blood processing filter includes the first step of supplying the blood component storage liquid from the storage liquid supply means to the blood processing filter and storing it in the third bag as the collected blood. Can be recovered in the blood component storage solution and used together with the processed blood for the preparation of blood component preparations, the amount of blood used for the preparation of blood component preparations (specifically CRC, PPP and PC) increases. Since the blood component storage solution (collected blood) is not mixed with the processed blood in the second bag used for the preparation of the blood component preparation, the concentration of the blood component (specifically, PRP) separated in the second step is It is not lowered by the blood component preservation solution. As a result, this PRP is transferred to the fourth bag in the third step, separated in the fourth step, and the concentration of the blood component preparation (specifically, PPP) prepared in the sixth bag in the fifth step is also It is not lowered by the blood component preservation solution.

  In addition, the blood component (specifically, PRP) in the second bag separated in the second step is transferred to the fourth bag, and the blood component (specifically, blood component storage solution and PC) in the third bag is transferred. A third step of transferring to the fifth bag, a fourth step of separating the blood components (specifically PRP) of the fourth bag into two (specifically PPP and PC), and blood components of the fifth bag By including the fifth step of mixing (specifically, blood component storage solution and PC) with the blood component (specifically PC) of the fourth bag, the blood component storage solution is converted into a blood component preparation (specifically, PC) can be used to prevent functional degradation, and the blood component (specifically, PPP) of the fourth bag is used as the blood component (specifically, PC) of the fourth bag, as in the past. Necessary to use to prevent functional degradation No.

  According to the blood bag system and the blood processing method of the present invention, since the blood component storage solution (collected blood) is not mixed with the processed blood, the prepared blood component preparation (specifically, PPP) is diluted with the blood component storage solution. There is no reduction in concentration. In addition, since the blood component storage solution is used to collect the blood remaining in the blood processing filter, no new addition of the blood component storage solution is required. Furthermore, since the treated blood and the collected blood are used for the preparation of the blood component preparation, the amount of blood used for the preparation of the blood component preparation increases, and the recovery rate of the blood component preparation (specifically, CRC, PPP and PC) increases. It is possible to improve. In addition, since a blood component preservation solution is used to prevent PC function deterioration and a part of PPP is not used as in the past, it becomes possible to further improve the recovery rate of PPP, In PC, reduction of blood transfusion side effects derived from PPP is expected.

1 is an external view showing a configuration of a first embodiment of a blood bag system according to the present invention. It is an external view which shows the structure of 2nd Embodiment of the blood bag system which concerns on this invention. It is an external view which shows the structure of another form of the blood bag system of FIG. The external view which shows the structure of another form of the 3rd bag and 5th bag in the blood bag system which concerns on this invention. FIG. 3 is a schematic diagram showing a procedure of a first step in the first embodiment of the blood processing method according to the present invention. FIG. 3 is a schematic diagram showing a procedure of a second step in the first embodiment of the blood processing method according to the present invention. It is a schematic diagram which shows the procedure of the 3rd step in 1st Embodiment of the blood processing method which concerns on this invention. It is a schematic diagram which shows the procedure of the 1st step in 2nd Embodiment of the blood processing method which concerns on this invention. It is a schematic diagram which shows the procedure of the 2nd step in 2nd Embodiment of the blood processing method which concerns on this invention. It is a schematic diagram which shows the procedure of the 3rd step in 2nd Embodiment of the blood processing method which concerns on this invention. It is a schematic diagram which shows the procedure of the 4th step in 2nd Embodiment of the blood processing method which concerns on this invention. It is a schematic diagram which shows the procedure of the 5th step in 2nd Embodiment of the blood processing method which concerns on this invention.

<Blood bag system>
An embodiment of a blood bag system according to the present invention will be described in detail with reference to the drawings. 1 is an external view showing the configuration of the first embodiment of the blood bag system, FIG. 2 is an external view showing the configuration of the second embodiment of the blood bag system, and FIG. 3 is another embodiment of the blood bag system of FIG. FIG. 4 is an external view showing the configuration of another form of the third bag and the fifth bag.

A first embodiment of the blood bag system will be described.
As shown in FIG. 1, the blood bag system 30 includes the first bag 1 and the preservation solution supply means 7 on the upstream side of the blood processing filter 8, and the second bag 2 and the third bag 3 on the downstream side of the blood processing filter 8. It has a bag 3 and a fourth bag 4.

  In the blood bag system 30, the first bag 1 is connected to the inlet 8 a of the blood processing filter 8 through the tube 15, and the preservation solution supply means 7 flows through the blood processing filter 8 through the tube 14 branched from the tube 15. It is connected to the inlet 8a. The second bag 2 is connected to the outlet 8b of the blood processing filter 8 through the tube 16, and the third bag 3 is connected to the outlet 8b of the blood processing filter 8 through the tube 17 branched from the tube 16. The fourth bag 4 is connected to the second bag 2 via the tube 18. Each configuration will be described below.

(Blood processing filter)
The blood processing filter 8 is a filter that performs processing for removing predetermined blood cell components from blood supplied from the first bag 1 described later. In the blood bag system 30, a filter that performs processing for removing white blood cells and platelets is used. preferable. The blood processing filter 8 has a filter portion 8d made of a porous membrane made of polyurethane or the like or a nonwoven fabric made of polyethylene terephthalate or the like in a housing 8c made of polyvinyl chloride or the like having an inlet 8a and an outlet 8b. It is arranged. The filter portion 8d preferably has a predetermined surface zeta potential. When the filter portion 8d is composed of a porous film, the surface zeta potential is +16 to +18 mV, and the filter portion 8d is composed of a nonwoven fabric. In some cases, the surface zeta potential is preferably −20 to −30 mV.

(First bag)
The first bag 1 supplies the stored blood to the blood processing filter 8, and is a bag-like container in which a flexible resin sheet such as polyvinyl chloride is stacked and its periphery is fused to form a bag shape. . Moreover, the internal volume of the 1st bag 1 is suitably selected with the amount of stored blood, and is 200-1000 ml. Further, the first bag 1 is preferably filled with an anticoagulant such as an ACD liquid or a CPD liquid in advance. Conventionally, the first bag 1 has been filled with a predetermined amount of air in order to reduce the amount of blood (residual blood) remaining in the blood treatment filter 8. However, if air is present in the blood treatment filter 8, the recovery of residual blood by the blood component storage solution described later is blocked by the air, and the recovery rate tends to decrease. Therefore, the amount of air in the first bag 1 is as much as possible. Less is preferred.

  In order to supply blood to the inside of the first bag 1, blood collection means including a blood collection needle 10 and a blood collection tube 11 is connected. The blood collecting means may have an initial blood collection device (test blood bag) 12 branched from the blood collection tube 11 and connected, and a false stick prevention device 13 for preventing the blood collection needle 10 from being erroneously stuck. Good. Further, a tube 15 for supplying the stored blood to the blood processing filter 8 is connected to the first bag 1, and the tube 15 has a flow path sealing member 15 a on the first bag 1 side. Tube clamps 15b are respectively provided on the blood filter 8 side. The flow path sealing member 15a includes a cover tube and a cylindrical body having a solid tip portion accommodated therein so as to close the flow path, and breaks the solid front end portion of the cylindrical body. Accordingly, the flow path in the cover tube is opened.

(Preservation solution supply means)
The preservation solution supply means 7 supplies a blood component preservation solution to the blood processing filter 8 and is a bag-like container similar to the first bag 1 and is made of a polyvinyl chloride sheet, an ethylene vinyl acetate sheet, or the like. However, as long as the blood component storage solution can be supplied to the blood processing filter 8, it is not limited to a bag-like container. A tube 14 for supplying the blood component preservation solution to the blood processing filter 8 is connected to the preservation solution supply means 7, and the blood component preservation solution is supplied to the blood treatment filter 8 at the proximal end of the tube 14. It has the supply control member 14a which controls. As the supply control member 14a, the flow path is opened (supply is started) by the same breakage as the flow path sealing member 15a, or the storage liquid supply means (bag-like container) 7 A connecting needle or the like whose supply is started by puncturing the needle.

  In FIG. 1, the preservation solution supply means 7 is connected in advance to the blood processing filter 8 via the tube 14 and the tube 15, but when the blood bag system 30 is used, that is, the blood component preservation solution is used as blood. When supplying the treatment filter 8, the preservation solution supply means 7 and the blood treatment filter 8 may be connected by connecting the tube 14 and the tube 15 using a commercially available aseptic connection device.

  The blood component storage solution collects the blood remaining in the blood processing filter 8 and prevents the deterioration of the function of blood cell components that are not removed by the blood processing filter 8 (filter unit 8d). In the blood bag system 30, A red blood cell preservation solution is preferred. As the red blood cell preservation solution, Optisol (registered trademark), MAP, SAGM, ADSOL and the like are used. The amount of the blood component storage solution is preferably 50 to 200 ml. If the amount of liquid is less than 50 ml, the recovery rate of blood components remaining in the blood treatment filter 8 is likely to be reduced, and the function of the blood component preparation (specifically CRC) prepared in the blood bag system 30 is reduced. Is likely to occur. On the other hand, if the liquid volume exceeds 200 ml, the economic efficiency tends to decrease.

(Second bag)
The second bag 2 stores processed blood obtained by processing the blood supplied from the first bag 1 with the blood processing filter 8, and is a bag-like container having the same material and shape as the first bag 1. Here, the treated blood is specifically blood from which white blood cells and platelets have been removed. The second bag 2 includes a tube 16 for supplying the processed blood from the blood processing filter 8 (outflow port 8b) into the second bag 2, blood components separated from the processed blood (specifically, PPP and A tube 18 for transferring a part of the CRC) (specifically, PPP) to the fourth bag 4 to be described later is connected. The tube 16 is provided with a tube clamp 22 and the tube 18 is provided with a flow path sealing member 18a. The channel sealing member 18a is the same as the channel sealing member 15a that opens the channel by breaking. Further, the inner volume of the second bag is preferably 200 to 1000 ml.

(3rd bag)
The third bag 3 temporarily stores the collected blood recovered by replacing the blood remaining in the blood processing filter 8 with the blood component storage solution after the blood processing by the blood processing filter 8. A bag-like container of the same material and shape as the one bag 1, preferably a bag-like container made of a polycarbonate sheet or the like having higher strength than the polyvinyl chloride sheet or the like constituting the first bag 1. The third bag 3 is connected to a tube 17 for supplying the collected blood from the blood processing filter 8 (outflow port 8b). The tube 17 is provided with a tube clamp 17a. Further, the inner volume of the third bag 3 is preferably 50 to 200 ml.

(4th bag)
The fourth bag 4 is configured to transfer a blood component (specifically, PPP) separated from the processed blood stored in the second bag 2 and store the transferred blood component (specifically, PPP). Thus, it is a bag-like container of the same material and shape as the first bag 1. And the tube 18 for supplying the blood component (specifically PPP) isolate | separated by the 2nd bag 2 to the inside is connected to the 4th bag 4. FIG. Further, the inner volume of the fourth bag 4 is preferably 200 to 1000 ml.

  In the blood bag system 30, the blood collection tube 11, tubes 14, 15, 16, 17, and 18 are made of a flexible resin such as polyvinyl chloride.

  In the blood bag system 30, the blood processing filter 8 is a leukocyte and platelet removal filter, the first bag 1 is a blood collection bag for storing whole blood, the second bag 2 is a red blood cell storage bag, and the fourth bag 4 is a plasma storage bag. Preferably there is. The blood component storage solution is preferably an erythrocyte storage solution.

Next, a second embodiment of the blood bag system will be described.
As shown in FIG. 2, the blood bag system 31 includes the first bag 1 and the preservation liquid supply means 7 on the upstream side of the blood processing filter 8, and the second bag 2 and the third bag on the downstream side of the blood processing filter 8. It has a bag 3, a fourth bag 4, a fifth bag 5 and a sixth bag 6.

  In the blood bag system 31, the first bag 1 is connected to the inflow port 8 a of the blood processing filter 8 via the tube 15, and the preservation solution supply means 7 flows to the blood processing filter 8 via the tube 14 branched from the tube 15. It is connected to the inlet 8a. The second bag 2 is connected to the outlet 8b of the blood processing filter 8 through the tube 16, and the third bag 3 is connected to the outlet 8b of the blood processing filter 8 through the tube 17 branched from the tube 16. The fourth bag 4 is connected to the second bag via the tube 18, the fifth bag 5 is connected to the third bag 3 and the fourth bag 4 via the tubes 19 and 21, and the sixth bag 6 is connected to the tube 18. The second bag 2 and the fourth bag 4 are connected to each other through a tube 20 branched from the first bag 2. Each configuration will be described below.

(Blood processing filter)
The blood processing filter 8 has the same configuration as that of the blood bag system 30 but is preferably a filter that performs processing for removing only white blood cells. And as for the filter part 8d of such a blood processing filter 8, it is preferable that the surface zeta potential is -2.0- + 2.0mV, and + 0.5- + 1.0mV is more preferable.

(First bag)
The first bag 1 is the same as the blood bag system 30 and will not be described. The treated blood is preferably blood from which only white blood cells have been removed.

(Preservation solution supply means)
The preservation solution supply means 7 has the same configuration as that of the blood bag system 30, but the blood component preservation solution is preferably a platelet preservation solution. As the platelet preservation solution, Composol, T-sol, Intersol, Plasma LiteA, SSP, SSP +, Cet solution, M-sol and the like are used.

(Second bag, third bag and fourth bag)
Since the 2nd bag 2, the 3rd bag 3, and the 4th bag 4 are the same as that of the said blood bag system 30, description is abbreviate | omitted. The blood component separated in the second bag 2 is preferably PRP and CRC, and the blood component transferred to the fourth bag 4 is preferably PRP and PC by separation of PRP and PRP. Further, a fifth bag 5 for transferring blood components separated in the third bag 3 is connected to the third bag 3 via a tube 19. The fourth bag 4 and the fifth bag 5 are connected by a tube 21 for transferring blood components in the fifth bag 5 to the fourth bag 4. And the flow path sealing member 19a is provided in the 3rd bag 3 side of the tube 19, and the flow path sealing member 21a is provided in the 4th bag 4 side of the tube 21, respectively. The channel sealing member 19a and the channel sealing member 21a are the same as the channel sealing member 15a that opens the channel by breaking.

(Fifth bag)
The fifth bag 5 is transferred with blood components (specifically, blood component preservation solution and PC) separated from the collected blood stored in the third bag 3, and the transferred blood components (specifically, blood components). A storage solution and PC) are temporarily stored, and are a bag-like container of the same material and shape as the third bag 3. The fifth bag 5 has a tube 19 for supplying blood components (specifically, a blood component storage solution and PC) separated in the third bag 3 into the fifth bag 5, and this blood component is stored in the fourth bag 4. A tube 21 for transporting to is connected. Further, the inner volume of the fifth bag 5 is preferably 50 to 200 ml. The fifth bag 5 may be the bag 9 integrated with the third bag 3 via the partition wall 9a (see FIG. 4).

(6th bag)
The sixth bag 6 is transferred with blood components (specifically PPP) further separated from the blood components (specifically PRP) transferred into the fourth bag 4 and transferred blood components (specifically Is a bag-like container of the same material and shape as the first bag 1. Moreover, it is preferable that the 6th bag 6 stores the erythrocyte preservation solution before storing the blood component. As the red blood cell preservation solution, Optisol, MAP, SAGM, ADSOL and the like are used. The sixth bag 6 is supplied with the blood component (specifically, PPP) separated in the fourth bag 4 and the blood component (CRC) separated in the second bag 2 is supplied with blood components. A tube 20 branched from the tube 18 is connected to supply the preservation solution, and a flow path sealing member 20a (similar to the flow path sealing member 15a) is opened at the proximal end of the tube 20 by breaking. )have.

  In blood bag system 31, blood collection tube 11, tubes 14, 15, 16, 17, 18, 19, 20, and 21 are made of a flexible resin such as polyvinyl chloride. The tube 16 preferably has a tube clamp 22 as in the blood bag system 30. The tube 18 has a tube clamp 23 to prevent the blood component (PRP) transferred to the fourth bag 4 from flowing back to the second bag (bag storing the CRC) 2 side. Preferably it is.

  In the blood bag system 31, the blood processing filter 8 is a leukocyte removal filter, the first bag 1 is a blood collection bag for storing whole blood, the second bag 2 is a red blood cell storage bag, the fourth bag 4 is a platelet storage bag, The bag 6 is preferably a plasma storage bag. The blood component storage solution is preferably a platelet storage solution.

  The second embodiment of the blood bag system according to the present invention may be a blood bag system 32 shown in FIG. The blood bag system 32 is different from the blood bag system 31 in the arrangement of the second to sixth bags, but the configuration is the same as that of the blood bag system 31, and thus the description thereof is omitted.

<Blood treatment method>
The blood processing method according to the present invention will be described with reference to the drawings. FIGS. 5 to 7 are schematic diagrams showing a procedure in the first embodiment of the blood processing method, and FIGS. 8 to 12 are schematic diagrams showing a procedure in the second embodiment of the blood processing method. The configuration of the blood bag system will be described with reference to FIGS. 1 and 2 as appropriate.

  The first embodiment of the blood processing method includes first to third steps in the blood processing method for processing blood using the blood bag system 30 (see FIG. 1) of the first embodiment. . Hereinafter, each step will be described (see FIGS. 5 to 7).

  In the first embodiment of the blood processing method, the following operation (operation for storing blood in the first bag 1) is performed before performing the first step. Specifically, blood collection is started by puncturing the donor with the blood collection needle 10 shown in FIG. 1 and, if necessary, the initial blood is collected in the initial blood collection instrument (blood bag for examination) 12, and then the blood collection tube 11 is inserted. A predetermined amount of blood is stored in the first bag 1. Thereafter, the blood collection needle 10 side of the blood collection tube 11 is melt-cut and separated from the blood bag system 30. Thereafter, the first to third steps are performed.

(First step)
As shown in FIG. 5, the flow path sealing member 15a of the tube 15 connected to the first bag 1 is broken to open the flow path. Next, the blood stored in the first bag 1 is supplied to the blood processing filter 8 through the tube 15, the blood is processed by the blood processing filter 8, and the second bag 2 is processed as processed blood through the tube 16. Store in.
Thereafter, the tube clamp 22 is closed, and the flow path on the second bag 2 side of the tube 16 is closed. Next, the supply control member 14a of the tube 14 connected to the preservation solution supply means 7 is controlled, and the blood component preservation solution (specifically, the erythrocyte preservation solution) is supplied from the preservation solution supply means 7 to the blood treatment filter 8. 14 to supply. Then, the blood remaining in the blood processing filter 8 is replaced with a blood component storage solution and collected through the tubes 16 and 17 and stored in the third bag 3 as the collected blood.
Then, after closing the tube clamp 17a, the tube 16 is melted and cut using a tube sealer, and the first bag 1, the storage solution supply means 7 and the blood processing filter 8 are separated from the blood bag system 30 and discarded.

  Before supplying the blood component preservation solution to the blood processing filter 8, the tube clamp 15 b is closed and the blood component preservation solution is supplied from the preservation solution supply means 7 to the first bag 1, so that the air in the tube 14 is supplied. Is preferably discharged into the empty first bag 1 after blood supply. As a result, the amount of air supplied to the blood processing filter 8 becomes very small, so that recovery of the blood remaining in the blood processing filter 8 with the blood component storage solution is not hindered by the air block. As a result, the remaining blood recovery rate is improved.

(Second step)
As shown in FIG. 6, the second bag 2 is centrifuged to separate the processed blood stored in the second bag 2 into two blood components (upper and lower two layers). Here, as centrifugal conditions, strong centrifugation (3600-5500 G) × (6-8 minutes) is preferable. Specifically, in the second bag 2, the processed blood is separated into PPP (upper layer) and CRC (lower layer). At this time, since the third bag 3 is centrifuged together with the second bag 2, the collected blood is separated into a blood component storage solution (storage solution) and CRC in the third bag 3.

(Third step)
As shown in FIG. 7, after breaking the flow path sealing member 18a of the tube 18 and opening the flow path, one blood component (lower layer, specifically CRC) is left in the second bag 2, The other blood component (upper layer, specifically, PPP) is transferred to the fourth bag 4 via the tube 18. Then, the tube 18 is melted and cut using a tube sealer, and the fourth bag 4 is cut off. Thereafter, the tube clamp 17a of the tube 17 and the tube clamp 22 of the tube 16 are opened, the flow path on the second bag 2 side of the tube 16 is opened, and the collected blood (specifically, storage solution and CRC) of the third bag. Is transferred to and mixed with one blood component (specifically, CRC) remaining in the second bag 2 through the tubes 16 and 17. Then, the tube 17 is melted and cut using a tube sealer, and the second bag 2 is cut off. As a result, CRC suspended in the second bag 2 with a storage solution (specifically, a red blood cell storage solution) and PPP in the fourth bag are prepared.

  Next, the second embodiment of the blood processing method is characterized in that the blood processing method for processing blood using the blood bag system 31 (see FIG. 2) includes first to fifth steps. In the blood processing method using the blood bag system 32 (see FIG. 3), blood is processed in the same steps. Hereinafter, the steps of the blood processing method will be described with reference to the case where the blood bag system 31 (see FIG. 2) is used (see FIGS. 8 to 12).

  In the second embodiment of the blood processing method, as in the first embodiment, the work of storing blood in the first bag 1 is performed before the first step.

(First step)
As shown in FIG. 8, the blood stored in the first bag 1 is processed by the blood processing filter 8 and processed in the same manner as the blood processing method of the first embodiment (see the first step, FIG. 5). The blood is stored in the second bag 2, and then a blood component storage solution (specifically, a platelet storage solution) is supplied from the storage solution supply means 7 to the blood processing filter 8 and remains in the blood processing filter 8. The blood that has been replaced with blood component storage solution is transferred and stored in the third bag 3 as recovered blood.

(Second step)
As shown in FIG. 9, the second bag 2 and the third bag 3 are centrifuged, and each of the processed blood stored in the second bag 2 and the collected blood stored in the third bag 3 is divided into two blood components (upper and lower). 2 layers). Here, as centrifugal conditions, weak centrifugation (600-1500 G) × (3-8 minutes) is preferable. Specifically, in the second bag 2, the treated blood is separated into PRP (upper layer) and CRC (lower layer), and in the third bag 3, the collected blood is separated into blood component preservation solution (preservation solution) and PC (upper layer) and CRC ( Separated into the lower layer).

(Third step)
As shown in FIG. 10, the flow path sealing member 18a of the tube 18 is broken to open the flow path, and the tube clamp 23 is opened so that one blood component (lower layer, specifically, And the other blood component (upper layer, specifically, PRP) is transferred to the fourth bag 4 through the tube 18. Also, the flow path sealing member 19a of the tube 19 is broken to open the flow path, leaving one blood component (lower layer, specifically CRC) in the third bag 3, and the other blood component ( The upper layer (specifically, PC and storage solution) is transferred to the fifth bag 5. Next, the tube 19 is melted and cut to separate the fifth bag 5 from the third bag 3. Thereafter, by opening the tube clamp 22 of the tube 16 and the tube clamp 17a of the tube 17, the flow path on the second bag 2 side of the tube 16 is opened, and one blood component remaining in the third bag 3 (lower layer, Specifically, CRC) is transferred to and mixed with one blood component (lower layer, specifically CRC) remaining in the second bag 2 through the tubes 16 and 17. At this time, the tube clamp 23 of the tube 18 is closed so that the other blood component (specifically, PRP) of the fourth bag 4 does not flow backward to the second bag 2 side. As a result, the CRC is adjusted in the second bag 2.

  When the red blood cell preservation solution (preservation solution) is stored in the sixth bag 6 in advance, the flow path sealing member 20a of the tube 20 is broken to open the flow path, and the sixth bag 6 is filled. The stored preservation solution is transferred into the second bag 2 through the tubes 18 and 20. As a result, a CRC suspended in the second bag 2 with a storage solution (specifically, a red blood cell storage solution) is prepared.

  Then, the tubes 16, 17, and 18 are melted and cut to separate the second bag 2 from the third bag 3 and the sixth bag 6.

(4th step)
As shown in FIG. 11, the fourth bag 4 is centrifuged to separate the other blood component (specifically, PRP) stored in the bag into two blood components (upper and lower two layers). Here, as centrifugal conditions, strong centrifugation (3600-5500 G) × (6-8 minutes) is preferable. Specifically, in the fourth bag 4, the other blood component (specifically, PRP) is separated into PPP (upper layer) and PC (lower layer). At this time, since the fifth bag 5 is centrifuged together with the fourth bag 4, the other blood component in the fifth bag 5 is separated into a storage solution (specifically, a platelet storage solution) and a PC.

(5th step)
As shown in FIG. 12, the tube clamp 23 of the tube 18 is opened, and the flow path of the tube 18 is opened. Then, one blood component (lower layer, PC) is left in the fourth bag 4 and the other blood component (upper layer, PPP) is transferred to the empty sixth bag 6 through the tubes 18 and 20. Next, the tube 20 is melt-cut and the sixth bag 6 is separated from the fourth bag 4. Then, after breaking the flow path sealing member 21a of the tube 21 and opening the flow path, the other blood component (preservative solution and PC) of the fifth bag 5 is left as one blood component ( Transfer to the lower layer (PC) via tube 21 and mix. Next, the tube 21 is melted and cut to separate the fifth bag 5 from the fourth bag 4. As a result, PPP is prepared in the sixth bag 6 and PC suspended in the fourth bag 4 with a storage solution (specifically, a platelet storage solution) is prepared. In addition, by transferring a part of the preservation solution separated in the fifth bag 5 to the PC prepared in the fourth bag 4 and mixing it, two bags of the fourth bag 4 and the fifth bag 5 are mixed. You may adjust PC suspended with a preservation | save liquid.

  In the third step of the second embodiment of the blood processing method, the other blood component (upper layer, specifically, PRP) of the second bag 2 shown in FIG. 10 is transferred to the fourth bag 4 in the third step. Only the operation of transferring the other blood component (upper layer, specifically, platelet preservation solution and PC) of the three bags 3 to the fifth bag 5 is performed, and the one blood component remaining in the third bag 3 shown in FIG. The lower layer (specifically, CRC) is transported to one blood component (lower layer, specifically CRC) remaining in the second bag 2 and mixed, or in addition to this operation, it is stored in the sixth bag 6 The operation of transferring the mixed red blood cell preservation solution to one blood component (lower layer, specifically CRC) remaining in the second bag 2 and mixing may be performed as the sixth step after the fifth step.

DESCRIPTION OF SYMBOLS 1 1st bag 2 2nd bag 3 3rd bag 4 4th bag 5 5th bag 6 6th bag 7 Preservation liquid supply means 8 Blood processing filter 30, 31, 32 Blood bag system

Claims (7)

A blood processing filter for processing blood;
A first bag for storing blood to be supplied to the blood treatment filter;
A second bag for storing the processed blood processed by the blood processing filter;
Storage solution supply means for supplying a blood component storage solution to the blood treatment filter;
A third bag for collecting the blood remaining in the blood treatment filter replaced by the blood component storage solution and temporarily storing the collected blood;
A blood bag separated from the processed blood stored in the second bag, and a fourth bag for storing the transferred blood component;
A fifth bag in which a blood component separated from the collected blood stored in the third bag is transferred, and the transferred blood component is temporarily stored;
The fourth further separated blood components from the blood component transferred into the bag is transferred, blood bag system that is characterized by having a sixth bag for accommodating transfer blood components, a. The blood treatment filter is a leukocyte removal filter that removes leukocytes from whole blood,
The first bag is a blood collection bag for storing whole blood;
The second bag is a red blood cell storage bag;
The blood component storage solution is a platelet storage solution,
The fourth bag is a platelet storage bag,
The blood bag system according to claim 1 , wherein the sixth bag is a plasma storage bag. The blood bag system according to claim 2 , wherein the sixth bag contains a red blood cell preservation solution before containing the blood component. The blood bag system according to claim 1, wherein the third bag and the fifth bag are integrated with a partition wall. The storage solution supply means is characterized in that a bag-like container in which the blood component preservation solution is stored is connected in advance, or the bag-like container is connected aseptically when used. The blood bag system according to any one of claims 1 to 4 . A blood processing filter for processing blood, a first bag for storing blood to be supplied to the blood processing filter, a second bag for storing processed blood processed by the blood processing filter, and blood components in the blood processing filter A storage solution supply means for supplying a storage solution, a third bag for recovering blood remaining in the blood processing filter replaced by the blood component storage solution, and temporarily storing the recovered blood; and the second bag A blood processing method for processing blood using a blood bag system having a fourth bag for transferring a blood component separated from the processed blood stored therein and storing the transferred blood component ,
The blood stored in the first bag is supplied to the blood processing filter, the processed blood processed by the blood processing filter is stored in the second bag, and then the blood component is stored from the storage liquid supply means. Supplying a liquid to the blood treatment filter, collecting blood remaining in the blood treatment filter, and storing the collected blood in the third bag;
A second step of centrifuging the second bag to separate the processed blood stored in the second bag into two blood components;
One blood component is left in the second bag, the other blood component is transferred to the fourth bag, and then the collected blood stored in the third bag is transferred to the second bag, And a third step of mixing with one blood component. A blood processing method for processing blood using the blood bag system according to claim 1 ,
The blood stored in the first bag is supplied to the blood processing filter, the processed blood processed by the blood processing filter is stored in the second bag, and then the blood component is stored from the storage liquid supply means. Supplying a liquid to the blood treatment filter, collecting blood remaining in the blood treatment filter, and storing the collected blood in the third bag;
A second step of centrifuging the second bag and the third bag to separate each of the processed blood stored in the second bag and the collected blood stored in the third bag into two blood components;
One blood component is left in the second bag and the other blood component is transferred to the fourth bag, and one blood component is left in the third bag and the other blood component is transferred to the fifth bag. Transferring to the bag, and then transferring one blood component in the third bag to the second bag and mixing with one blood component in the second bag;
A fourth step of centrifuging the fourth bag to further separate the other blood component contained in the fourth bag into two blood components;
One blood component is left in the fourth bag, the other blood component is transferred to the sixth bag, and then the other blood component in the fifth bag is transferred to the fourth bag. And a fifth step of mixing with one blood component in the four bags.

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